Finding the Fourth Proportional to 22,282.57, 30,748.60 and 12,209

Step by Step Solution

1. Step 1: Write the proportion equation
   22,282.57 : 30,748.60 = 12,209 : x
2. Step 2: Convert to fraction form
   22,282.57/30,748.60 = 12,209/x
3. Step 3: Cross multiply
   22,282.57x = 30,748.60 × 12,209
4. Step 4: Simplify right side
   22,282.57x = 375,409,657.40
5. Step 5: Solve for x
   x = 375,409,657.40/22,282.57
6. Step 6: Final answer
   x = 16,847.68